US7134270B2 - External combustion engine - Google Patents

External combustion engine Download PDF

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Publication number
US7134270B2
US7134270B2 US10/511,635 US51163504A US7134270B2 US 7134270 B2 US7134270 B2 US 7134270B2 US 51163504 A US51163504 A US 51163504A US 7134270 B2 US7134270 B2 US 7134270B2
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United States
Prior art keywords
air
chamber
working
valve
engine
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Expired - Fee Related, expires
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US10/511,635
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English (en)
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US20050198962A1 (en
Inventor
Rein Tigane
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Tigan Holding Oy
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Tigan Holding Oy
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Publication of US20050198962A1 publication Critical patent/US20050198962A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G1/00—Hot gas positive-displacement engine plants
    • F02G1/02—Hot gas positive-displacement engine plants of open-cycle type

Definitions

  • the present invention relates to an external combustion engine as defined in the preamble of claim 1 .
  • a prior-art external combustion engine is known from U.S. Pat. No. 4,336,686, which describes a rotating external combustion engine having a radial piston compressor, a continuous combustion chamber and a radial piston expander and means for supplying fuel into the combustion chamber.
  • Prior-art machines have the drawback that they are complicated, difficult to service and they need a separate cooler, or the cycle lacks a compression phase.
  • the object of the present invention is to achieve a freely breathing external combustion engine that has a simple construction and involves low maintenance costs.
  • the external combustion engine of the invention works on the principle that the working gas (air) is changed after each revolution and after the working cycle the expanded hot air is passed from the working chamber through a valve into the combustion chamber, to be used as combustion air.
  • the working air can be preheated using the exhaust gas from the combustion chamber by means of a heat exchanger.
  • the invention affords several advantages: No cooling is needed as cold air is taken from outside the engine.
  • the engine is easy to seal because it works with a low pressure and possible leakages are compensated for during each revolution.
  • FIG. 1 presents a diagram of the structure and working principle of the freely breathing external combustion engine of the invention
  • FIG. 2 is a graphic representation of the phasing of the pistons of the engine.
  • FIG. 3 presents a diagram of the pressure-volume cycles of the engine.
  • the working principle of the freely breathing heat engine or hot-air engine is as follows: Outer air is drawn via a filter 1 and an opened valve 2 into the crankcase 21 , where it is pre-compressed and drawn by suction via a valve 3 into the compression chamber 6 , where it is compressed. ( FIG. 3 phase 1 ).
  • the compressed air is passed through a regenerator 23 into a preheater 19 and further via a heat exchanger 17 into the working chamber 18 . ( FIG. 3 phase 2 ).
  • the hot air performs a working cycle ( FIG. 3 phase 3 ) by pushing the working piston 20 into the upper position.
  • the expanded hot air is removed by the movement of the working piston via the regenerator 23 when valve 24 is open.
  • the hot air having performed a working cycle is utilized by transferring the residual heat and overpressure into the combustion process.
  • the hot air is passed via a pressure equalization chamber 15 and pressure compensating valves 16 into the combustion chamber 13 and to the burner 14 .
  • valve 12 it is possible to use direct exhaust air connection via valve 12 .
  • the regenerator 23 and valve 24 are turned off and valve 4 is connected directly to the preheater 19 .
  • Valves 12 and 24 are positively controlled. Valves 2 , 3 and 4 are also in practice rotating valves at the end of the crankshaft.
  • valve 5 Power control and starting are accomplished by means of valve 5 by reducing the active volume of the compression chamber 6 .
  • the engine body 8 is a simple tube which houses a compression piston 7 , a crank mechanism 22 and a working piston 20 .
  • the hot area of the working chamber 18 is insulated with a heat insulating seal 11 .
  • Mounted on the body 8 is the stator 9 of an electric generator, and the rotor-flywheel of the generator is mounted on the end of the crankshaft 22 .
  • the engine is primarily intended for gaseous or liquid fuels, but with an auxiliary burner it is also possible to use solid fuel.
  • the engine is intended for the production of electricity in non-built-up areas and for the production of heat and electricity in detached houses.
  • the engine is also applicable for use as a power source in boats and garden machines.
  • the engine may preferably have a tubular body containing a crank mechanism and two pistons moving in a phased manner in opposite directions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Valve Device For Special Equipments (AREA)
  • Luminescent Compositions (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
US10/511,635 2002-04-18 2003-04-11 External combustion engine Expired - Fee Related US7134270B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20020743 2002-04-18
FI20020743A FI114113B (fi) 2002-04-18 2002-04-18 Ulkopalamismoottori
PCT/FI2003/000278 WO2003087563A1 (en) 2002-04-18 2003-04-11 External combustion engine

Publications (2)

Publication Number Publication Date
US20050198962A1 US20050198962A1 (en) 2005-09-15
US7134270B2 true US7134270B2 (en) 2006-11-14

Family

ID=8563786

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/511,635 Expired - Fee Related US7134270B2 (en) 2002-04-18 2003-04-11 External combustion engine

Country Status (8)

Country Link
US (1) US7134270B2 (de)
EP (1) EP1495223B1 (de)
JP (1) JP2005522628A (de)
AT (1) ATE385287T1 (de)
AU (1) AU2003219201A1 (de)
DE (1) DE60318939T2 (de)
FI (1) FI114113B (de)
WO (1) WO2003087563A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11753988B2 (en) 2018-11-30 2023-09-12 David L. Stenz Internal combustion engine configured for use with solid or slow burning fuels, and methods of operating or implementing same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080022693A1 (en) * 2005-09-30 2008-01-31 Zoran Dicic Ceramic blade gas turbine
US7849047B2 (en) * 2006-02-09 2010-12-07 Ebay Inc. Method and system to analyze domain rules based on domain coverage of the domain rules
MD4437C1 (ro) * 2016-04-20 2017-05-31 Ион ЧЕРЕМПЕЙ Motor cu ardere externă (variante)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB498882A (en) 1937-07-13 1939-01-13 John Sutherst Bruce Improvements in and relating to hot air power plant
US3756022A (en) 1971-06-07 1973-09-04 J Pronovost External combustion engine
US3893300A (en) * 1973-04-30 1975-07-08 Nrg Inc External combustion engine and engine cycle
US4077221A (en) * 1975-07-25 1978-03-07 Nissan Motor Company, Limited External heat engine
US4120161A (en) 1975-12-19 1978-10-17 Gedeit Reinhold C External heat engine
US4164124A (en) * 1975-06-11 1979-08-14 Combustion Turbine Power, Inc. Turbine system using unclean fuel
US4336686A (en) 1978-04-21 1982-06-29 Combustion Research & Technology, Inc. Constant volume, continuous external combustion rotary engine with piston compressor and expander
US4492085A (en) * 1982-08-09 1985-01-08 General Electric Company Gas turbine power plant
DE3616001A1 (de) * 1986-05-13 1987-11-19 Eder Franz X Thermohydraulische regenerative arbeitsmaschine
US4751819A (en) * 1984-10-19 1988-06-21 Eder Franz X Gas compressor directly driven through heat input
US5755100A (en) * 1997-03-24 1998-05-26 Stirling Marine Power Limited Hermetically sealed stirling engine generator
US6736090B1 (en) * 1999-05-24 2004-05-18 Masaharu Ichikawa Valve device of engine

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB498882A (en) 1937-07-13 1939-01-13 John Sutherst Bruce Improvements in and relating to hot air power plant
US3756022A (en) 1971-06-07 1973-09-04 J Pronovost External combustion engine
US3893300A (en) * 1973-04-30 1975-07-08 Nrg Inc External combustion engine and engine cycle
US4164124A (en) * 1975-06-11 1979-08-14 Combustion Turbine Power, Inc. Turbine system using unclean fuel
US4077221A (en) * 1975-07-25 1978-03-07 Nissan Motor Company, Limited External heat engine
US4120161A (en) 1975-12-19 1978-10-17 Gedeit Reinhold C External heat engine
US4336686A (en) 1978-04-21 1982-06-29 Combustion Research & Technology, Inc. Constant volume, continuous external combustion rotary engine with piston compressor and expander
US4492085A (en) * 1982-08-09 1985-01-08 General Electric Company Gas turbine power plant
US4751819A (en) * 1984-10-19 1988-06-21 Eder Franz X Gas compressor directly driven through heat input
DE3616001A1 (de) * 1986-05-13 1987-11-19 Eder Franz X Thermohydraulische regenerative arbeitsmaschine
US5755100A (en) * 1997-03-24 1998-05-26 Stirling Marine Power Limited Hermetically sealed stirling engine generator
US6736090B1 (en) * 1999-05-24 2004-05-18 Masaharu Ichikawa Valve device of engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11753988B2 (en) 2018-11-30 2023-09-12 David L. Stenz Internal combustion engine configured for use with solid or slow burning fuels, and methods of operating or implementing same

Also Published As

Publication number Publication date
DE60318939D1 (de) 2008-03-20
US20050198962A1 (en) 2005-09-15
FI20020743A (fi) 2003-10-19
EP1495223A1 (de) 2005-01-12
FI114113B (fi) 2004-08-13
WO2003087563A1 (en) 2003-10-23
AU2003219201A1 (en) 2003-10-27
DE60318939T2 (de) 2009-01-22
ATE385287T1 (de) 2008-02-15
JP2005522628A (ja) 2005-07-28
EP1495223B1 (de) 2008-01-30
FI20020743A0 (fi) 2002-04-18

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Effective date: 20101114